2 * irq.h: in kernel interrupt controller related definitions
3 * Copyright (c) 2007, Intel Corporation.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
16 * Place - Suite 330, Boston, MA 02111-1307 USA.
18 * Yaozu (Eddie) Dong <Eddie.dong@intel.com>
25 #include <linux/mm_types.h>
26 #include <linux/hrtimer.h>
27 #include <linux/kvm_host.h>
33 #define PIC_NUM_PINS 16
38 typedef void irq_request_func(void *opaque
, int level
);
40 struct kvm_kpic_state
{
41 u8 last_irr
; /* edge detection */
42 u8 irr
; /* interrupt request register */
43 u8 imr
; /* interrupt mask register */
44 u8 isr
; /* interrupt service register */
45 u8 isr_ack
; /* interrupt ack detection */
46 u8 priority_add
; /* highest irq priority */
53 u8 rotate_on_auto_eoi
;
54 u8 special_fully_nested_mode
;
55 u8 init4
; /* true if 4 byte init */
56 u8 elcr
; /* PIIX edge/trigger selection */
58 struct kvm_pic
*pics_state
;
62 struct kvm_kpic_state pics
[2]; /* 0 is master pic, 1 is slave pic */
63 irq_request_func
*irq_request
;
64 void *irq_request_opaque
;
65 int output
; /* intr from master PIC */
66 struct kvm_io_device dev
;
67 void (*ack_notifier
)(void *opaque
, int irq
);
70 struct kvm_pic
*kvm_create_pic(struct kvm
*kvm
);
71 int kvm_pic_read_irq(struct kvm
*kvm
);
72 void kvm_pic_update_irq(struct kvm_pic
*s
);
73 void kvm_pic_clear_isr_ack(struct kvm
*kvm
);
75 static inline struct kvm_pic
*pic_irqchip(struct kvm
*kvm
)
77 return kvm
->arch
.vpic
;
80 static inline int irqchip_in_kernel(struct kvm
*kvm
)
82 return pic_irqchip(kvm
) != NULL
;
85 void kvm_pic_reset(struct kvm_kpic_state
*s
);
87 void kvm_timer_intr_post(struct kvm_vcpu
*vcpu
, int vec
);
88 void kvm_inject_pending_timer_irqs(struct kvm_vcpu
*vcpu
);
89 void kvm_inject_apic_timer_irqs(struct kvm_vcpu
*vcpu
);
90 void __kvm_migrate_apic_timer(struct kvm_vcpu
*vcpu
);
91 void __kvm_migrate_pit_timer(struct kvm_vcpu
*vcpu
);
92 void __kvm_migrate_timers(struct kvm_vcpu
*vcpu
);
94 int pit_has_pending_timer(struct kvm_vcpu
*vcpu
);
95 int apic_has_pending_timer(struct kvm_vcpu
*vcpu
);